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US Fluid Ounces to US Gallons Converter

1 US fluid ounce = 0.0078125 gal. Enter any value to convert US fluid ounces (fl oz) to US gallons (gal), or use the table below for common values.

Results

1 fl oz =0.0078125 galUS fluid ounces → US gallons
1 fl oz0.0078125 gal
1 gal128 fl oz
Formula
gal = fl oz × 0.0078125
1 fl oz in other units
UnitValue
milliliters (mL)29.57352956
liters (L)0.02957352956
cubic meters (m³)0.00002957352956
US teaspoons (tsp)6
US tablespoons (tbsp)2
US cups (cup)0.125
US pints (pt)0.0625
US quarts (qt)0.03125
US gallons (gal)0.0078125

Formula

gal = fl oz × 0.0078125

Example: 10 fl oz = 0.078125 gal. To convert the other way, use fl oz = gal × 128.

Quick mental estimate: multiply by about 0.0078.

US Fluid Ounces to US Gallons conversion table

US Fluid Ounces (fl oz)US Gallons (gal)
1 fl oz0.0078125 gal
2 fl oz0.015625 gal
3 fl oz0.0234375 gal
4 fl oz0.03125 gal
5 fl oz0.0390625 gal
6 fl oz0.046875 gal
7 fl oz0.0546875 gal
8 fl oz0.0625 gal
9 fl oz0.0703125 gal
10 fl oz0.078125 gal
15 fl oz0.1171875 gal
20 fl oz0.15625 gal
25 fl oz0.1953125 gal
30 fl oz0.234375 gal
40 fl oz0.3125 gal
50 fl oz0.390625 gal
75 fl oz0.5859375 gal
100 fl oz0.78125 gal
250 fl oz1.953125 gal
500 fl oz3.90625 gal
1,000 fl oz7.8125 gal

About US fluid ounces and US gallons

The US fluid ounce is 1/128 of a US gallon, about 29.57 mL. It is used on drink and cosmetics labels in the US.

The US gallon is exactly 231 cubic inches, about 3.785 liters. Fuel and milk are sold by the gallon in the US; the UK imperial gallon is about 4.546 liters.

Other Volume conversions

US Gallons → US Fluid OuncesReverse conversionMilliliters → US GallonsmL → galLiters → US GallonsL → galCubic Meters → US Gallonsm³ → galUS Teaspoons → US Gallonstsp → galUS Tablespoons → US Gallonstbsp → galUS Fluid Ounces → Millilitersfl oz → mLUS Fluid Ounces → Litersfl oz → LUS Fluid Ounces → Cubic Metersfl oz → m³US Fluid Ounces → US Teaspoonsfl oz → tspUS Fluid Ounces → US Tablespoonsfl oz → tbspUS Fluid Ounces → US Cupsfl oz → cupUS Fluid Ounces → US Pintsfl oz → ptUS Fluid Ounces → US Quartsfl oz → qtUS Cups → US Gallonscup → galUS Pints → US Gallonspt → galUS Quarts → US Gallonsqt → gal

Frequently asked questions

How do I convert US fluid ounces to US gallons?

Use the formula gal = fl oz × 0.0078125. For example, 10 fl oz = 0.078125 gal.

What is 1 US fluid ounce in US gallons?

1 fl oz = 0.0078125 gal.

How do I convert US gallons back to US fluid ounces?

Use fl oz = gal × 128. 1 gal = 128 fl oz.